/**
 * #      剑指 Offer 26
 * 名称   树的子结构
 * 链接   https://leetcode-cn.com/problems/shu-de-zi-jie-gou-lcof
 * 题解   [775](https://leetcode-cn.com/problems/shu-de-zi-jie-gou-lcof/solution)
 * 通过率 46.0%
 * 难道   中等
 */

